World Resorts Norway Oslo Weather

Oslo Sea Temperature in September

Average sea water temperature in September:
+59.8°F
Minimum sea water temperature in September: 65.3°F
Maximum sea water temperature in September: 54.3°F

Daily sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 60.7°F. The highest and lowest sea temperatures during the month were 64.8°F and 56.3°F.

Monthly sea water temperature in Oslo, °F

Which Norway resorts have warmest sea in September?

Place name September 2025 September 2024
Holmenkollen 60.7°F 60.2°F
Oslo 60.7°F 60.3°F
Stavanger 60.0°F 59.6°F
Ålesund 57.5°F 57.3°F
Bergen 56.8°F 57.3°F
Trondheim 56.0°F 56.8°F
Tromse 50.4°F 53.3°F

Best time for vacation in Oslo

Sunniest months:
June 11 days
May 11 days
July 11 days
Warmest months:
July 68.6 °F
August 65.4 °F
June 64.9 °F
Warmest sea temp:
July 65.7 °F
August 65.0 °F
June 60.4 °F
Coldest months:
January 24.7 °F
February 28.5 °F
December 29.0 °F
Rainiest months:
August 6 days
May 5 days
June 5 days
Windiest months:
May 6.3 mph
June 6.1 mph
April 6.0 mph

Oslo on a weather map

Current weather
13:23
Oslo
+64°F
N 6 mph
Feels like: +64°F
Precip.: 1%
Places in Norway:
Name
°F
Bergen
+54°F
Lillehammer
+50°F
Ålesund
+54°F
Oslo
+64°F
Stavanger
+57°F
Tromse
+59°F
Trondheim
+50°F
Flam
+45°F
Hemsedal
+39°F
Holmenkollen
+61°F
24 Hours Forecast
Oslo
Local time: 13:23
August 21, friday
1500
66°F
N
9 mph
1800
64°F
N
6 mph
2100
54°F
E
2 mph
August 22, saturday
0000
52°F
S
4 mph
0300
52°F
SE
5 mph
0600
50°F
SE
4 mph
0900
52°F
SE
6 mph
1200
55°F
S
7 mph
Units of measurement: °C / °F